Domestic wastewater treatment with a small-scale membrane bioreactor

2006 ◽  
Vol 53 (3) ◽  
pp. 69-78 ◽  
Author(s):  
C. Abegglen ◽  
H. Siegrist
Keyword(s):  
Membrane Bioreactor ◽  
Control Strategies ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Phosphate Removal ◽  
Small Scale ◽  
First Year ◽  
Effluent Quality ◽  
Domestic Wastewater Treatment ◽  
And Control

A small-scale membrane plant for treating the domestic wastewater of a four-person household is presented. The membrane bioreactor has been in operation for 6 months and achieves elimination rates of 90, 95 and 80% for total organic carbon, chemical oxygen demand and total nitrogen, respectively. Only a small amount sludge is produced. The permeate is reused for flushing toilets and has a yellowish colour. After investigations of the effluent quality, decolourisation of the permeate, energy efficiency and control strategies in the first year, urine will be treated separately in an automated precipitation reactor where struvite is produced to improve the overall phosphate removal of the plant.

Design and operating experiences of municipal MBRs in Europe

2008 ◽  
Vol 58 (12) ◽  
pp. 2319-2327 ◽  
Author(s):  
H. Itokawa ◽  
C. Thiemig ◽  
J. Pinnekamp
Keyword(s):  
Membrane Bioreactor ◽  
Membrane Damage ◽  
Full Scale ◽  
Operating Conditions ◽  
Small Scale ◽  
Membrane Unit ◽  
Effluent Quality ◽  
Membrane Flux ◽  
The Moment ◽  
And Control

The number of membrane bioreactor (MBR) installations is increasing worldwide, not only for small-scale industrial WWTPs but also for larger-scale municipal WWTPs. In Europe, MBR has been installed in municipal WWTPs since late 1990s, and more than 100 full-scale plants are operated at the moment. In this paper, present state of European municipal MBRs is described in terms of design and operating conditions, as well as operating problems and their solutions, based on the information collected from 17 full-scale WWTPs by interview and questionnaire survey. Decisive factors of MBR installation at these plants were footprint and effluent quality. Full-aerobic and pre-denitrification were the most common reactor configurations, nearly half of them being equipped with independent filtration tanks. Operating conditions of bioreactor and filtration, including membrane flux and cleaning strategy, were different from plant to plant, as a result of plant-specific optimization experiences, even among the similar type of membrane. Operating problems specific for MBR were reported, including blocking/failure of pre-screen, sludging/hair-clogging of membrane, damage on membrane unit, air in permeate pipes, as well as conventional troubles including occurrence of scum and initial trouble in instrumentation and control systems. Aspects for further optimization of MBR design were also pointed out by the operators.

Comparative study of membrane bioreactor (MBR) and activated sludge processes in the treatment of Moroccan domestic wastewater

2018 ◽  
Vol 78 (5) ◽  
pp. 1129-1136 ◽  
Author(s):  
S. Kitanou ◽  
M. Tahri ◽  
B. Bachiri ◽  
M. Mahi ◽  
M. Hafsi ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Membrane Bioreactor ◽  
Ceramic Membrane ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
Quality Parameters ◽  
Effluent Quality ◽  
Conventional Activated Sludge ◽  
Activated Sludge Processes

Abstract The study was based on an external pilot-scale membrane bioreactor (MBR) with a ceramic membrane compared to a conventional activated sludge process (ASP) plant. Both systems received their influent from domestic wastewater. The MBR produced an effluent of much better quality than the ASP in terms of total suspended solids (TSS), 5-day biological oxygen demand (BOD5) and chemical oxygen demand (COD), total phosphorus (TP) and total nitrogen (TN). Other effluent quality parameters also indicated substantial differences between the ASP and the MBR. This study leads to the conclusion that in the case of domestic wastewater, MBR treatment leads to excellent effluent quality. Hence, the replacement of ASP by MBR may be justified on the basis of the improved removal of solids, nutrients, and micropollutants. Furthermore, in terms of reuse the high quality of the treated water allows it to be reused for irrigation.

Five years operation of a decentralized membrane bioreactor package plant treating domestic wastewater

2014 ◽  
Vol 9 (2) ◽  
pp. 206-214 ◽  
Author(s):  
C. S. Tai ◽  
J. Snider-Nevin ◽  
J. Dragasevich ◽  
J. Kempson
Keyword(s):  
Wastewater Treatment ◽  
Membrane Bioreactor ◽  
Water Discharge ◽  
Treatment Plant ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Surface Discharge ◽  
Small Community ◽  
Effluent Quality ◽  
Decentralized Wastewater Treatment

Membrane bioreactor (MBR) package systems are providing affordable and simple-to-use decentralized wastewater treatment solutions for small to medium sized communities that face the challenge of balancing environmental and regulatory responsibilities with budgetary limitations. With a greater confidence and understanding of MBR technology, there is an increasing incentive in using MBR technology for these types of applications. Furthermore, valued qualities such as compact footprint, quick installation and start-up, process reliability, ease of operation, and superior effluent quality suitable for direct surface discharge and water reclamation have made MBR package system a preferred solution for decentralized wastewater treatment applications. This paper presents a retrofit solution for the Whitehouse Terrace Wastewater Treatment Plant. The existing extended aeration activated sludge package plant was retrofitted with a pre-engineered newterra MicroClearTM MBR package system for a small community along St Lawrence River in Brockville, Ontario. Five years full scale operation data of the MBR package system is presented and it is evident that the MBR package system consistently delivered high quality effluent that is far better than the required limit for direct surface water discharge to the St. Lawrence's river, with average effluent quality of 2.4, 2.6, 0.5, 0.05 mg/L, 1.7 counts/100 mL and 7.4 for biochemical oxygen demand, TSS, TP, TAN, Escherichia coli and pH, respectively.

scholarly journals Biodegradation of Emerging Pharmaceuticals from Domestic Wastewater by Membrane Bioreactor: The Effect of Solid Retention Time

2021 ◽  
Vol 18 (7) ◽  
pp. 3395
Author(s):  
Raghad Asad Kadhim ALOBAIDI ◽  
Kubra ULUCAN-ALTUNTAS ◽  
Rasha Khalid Sabri MHEMID ◽  
Neslihan MANAV-DEMIR ◽  
Ozer CINAR
Keyword(s):  
Biological Treatment ◽  
Membrane Bioreactor ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Pharmaceutical Compounds ◽  
Membrane Bioreactors ◽  
Solid Retention Time ◽  
Effluent Quality ◽  
Treatment Processes ◽  
By Products

Although conventional biological treatment plants can remove basic pollutants, they are ineffective at removing recalcitrant pollutants. Membrane bioreactors contain promising technology and have the advantages of better effluent quality and lower sludge production compared to those of conventional biological treatment processes. In this study, the removal of pharmaceutical compounds by membrane bioreactors under different solid retention times (SRTs) was investigated. To study the effect of SRT on the removal of emerging pharmaceuticals, the levels of pharmaceuticals were measured over 96 days for the following retention times: 20, 30, and 40-day SRT. It was found that the 40-day SRT had the optimum performance in terms of the pharmaceuticals’ elimination. The removal efficiencies of the chemical oxygen demand (COD) for each selected SRT were higher than 96% at steady-state conditions. The highest degradation efficiency was observed for paracetamol. Paracetamol was the most removed compound followed by ranitidine, atenolol, bezafibrate, diclofenac, and carbamazepine. The microbial community at the phylum level was also analyzed to understand the biodegradability of pharmaceuticals. It was noticed that the Proteobacteria phylum increased from 46.8% to 60.0% after 96 days with the pharmaceuticals. The Actinobacteria class, which can metabolize paracetamol, carbamazepine, and atenolol, was also increased from 9.1% to 17.9% after adding pharmaceuticals. The by-products of diclofenac, bezafibrate, and carbamazepine were observed in the effluent samples.

scholarly journals Study on the Performance Characteristics of Sequencing Batch Membrane Bioreactor for Distributed Treatment of Domestic Wastewater

2018 ◽  
Vol 63 (1) ◽  
pp. 18-26 ◽  
Author(s):  
Gong Cheng ◽  
Amarendra Dhar Dwivedi ◽  
Jie Fu
Keyword(s):  
Membrane Bioreactor ◽  
Water Flux ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Ammonia Nitrogen ◽  
Aeration Rate ◽  
Transmembrane Pressure ◽  
Domestic Wastewater Treatment ◽  
Average Water

A large amount of domestic wastewater is produced in our daily life. To sustainably use the urban domestic wastewater in the residential area and develop the equipment for distributed domestic wastewater treatment, the present work carried out a pilot study on the treatment of domestic wastewater by sequencing batch membrane bioreactor (SBMBR). Under the conditions of 20 L/h·m2 of average water flux, and 2 h/3 h of anaerobic/aerobic period, the SBMBR process showed a good treatment effect with a good quality of effluent (<50 mg/L of chemical oxygen demand (COD), <5 mg/L of ammonia nitrogen (NH3-N), <15 mg/L of total nitrogen (TN), <2.6 NTU of turbidity, 96.9% of color removal and 99.9% of bacteria removal). The aeration quantity had a certain degree of impact on the removal of COD and the optimum aeration rate was 13.9 m3/m3·h considering both the effectiveness and cost. When the SBMBR was continuously operated for 40 days, the transmembrane pressure reached 50 kPa and the membrane needed to clean. The hydrochloric acid (pH ≈ 2) was a suitable cleaning agent and the membrane was almost completely restored after cleaning.

Performance comparison of direct membrane separation and membrane bioreactor for domestic wastewater treatment and water reuse

2001 ◽  
Vol 1 (5-6) ◽  
pp. 315-323 ◽  
Author(s):  
K.-H. Ahn ◽  
K.-G. Song ◽  
I.-T. Yeom ◽  
K.-Y. Park
Keyword(s):  
Wastewater Treatment ◽  
Water Reuse ◽  
Membrane Filtration ◽  
Membrane Bioreactor ◽  
Membrane Separation ◽  
Domestic Wastewater ◽  
Filtration Resistance ◽  
Effluent Quality ◽  
Legal Standards ◽  
Domestic Wastewater Treatment

Two pilot-scale wastewater treatment systems - direct membrane separation (DMS) and membrane bioreactor (MBR) systems - were designed and constructed in order to investigate the feasibility of membrane filtration technology for domestic wastewater treatment and water reuse. A submerged-type hollow-fiber microfiltration (HF-MF) membrane module with pore size of 0.1μm was employed to build each pilot system. The systems were tested using low- and high-strength domestic wastewaters and the system performance was continuously monitored for a long period to compare filtration characteristics and effluent quality in each system. The MBR system showed much better performance than the DMS system in terms of filtration characteristics and effluent quality. Even though the mixed-liquor suspended solid (MLSS) content in the MBR system was much higher than that in the DMS system, the MBR filtration resistance was much lower than the DMS filtration resistance. The DMS system was not able to remove dissolved organic matter, which seemed to be a major component of membrane fouling. The MBR effluent quality such as COD, BOD, TOC and T-N was more stable and better than the DMS. In the MBR process, the organic removal efficiency remained more than 95% regardless of fluctuation in influent qualities. The effluent quality of both systems was satisfying the legal standards for water reuse in Korea. Rejection of pathogenic microorganisms by membrane filtration was also investigated.

scholarly journals Aerobic Brickbat Grit Sand (ABGS) Purifier is the Alternative Solution: Tackling the Problem of Rural Wastewater Treatment in India

2018 ◽  
Vol 13 (3) ◽  
pp. 457-464
Author(s):  
PRIYANAND AGALE ◽  
PARAG SADGIR
Keyword(s):  
Wastewater Treatment ◽  
Oxygen Demand ◽  
Domestic Wastewater ◽  
Alternative Solution ◽  
Domestic Wastewater Treatment ◽  
Zigzag Pattern ◽  
Important Barrier ◽  
Removal Of Contaminants ◽  
College Of Engineering ◽  
Rural Wastewater

Rural wastewater treatment is mostly ignored in developing and undeveloped countries. The most important barrier for addressing to this problem is cost of treatment and simplified technology. Aerobic Brickbat Grit Sand (ABGS) purifier consists of four stages. Wastewater flows gravitationally through partition walls in zigzag pattern with brick bats filter; Pebble sand filter and charcoal and grit filter which facilitate removal of contaminants from domestic wastewater. In the present study, experimental model for domestic wastewater treatment was setup in the Environmental Engineering laboratory at Government College of Engineering Aurangabad, Maharashtra. Physiochemical analysis was done in August and September of 2016 the percentage removal of contaminants results shows Biological Oxygen Demand (BOD) 92% - 87%, Chemical Oxygen Demand (COD) 93 - 89%, Total Suspended Solids( TSS) 80 - 78% and Turbidity 95 - 85%. The process is considered eco-friendly and easy to install technology for domestic wastewater treatment with use of locally available material. ABGS purifier is decentralized approach of domestic wastewater treatment. Hence ABGS as an alternative solution to tackle over the problem of rural wastewater treatment.

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